package Shape;

public class Rect extends Shape{
    private double length;
    private double width;
    Rect(double length,double width){
        this.length=length;
        this.width=width;

    }

    public void draw(){
        System.out.println("矩形：length="+length+"width="+width);
    }

    public void calcArea(){
        area=length*width;
    }
}
